I'm really worried about my mom. She's had these enlarged supraclavicular lymph nodes for two years now. There are no signs of TB like fever, weight loss, or fatigue, and she's been managing her diabetes pretty well. There was nothing in the lymph nodes when tested for CBNAAT. The ultrasound showed they're quite large, and the biopsy results indicated granulomatous lymphadenitis. The document says TB needs to be ruled out, and the AFB stain came back negative. They also mentioned something about doing a TBPCR test to make sure it's not tuberculosis. The microscopic findings talked about some kind of granulomas but no caseous necrosis was found. TB PCR didn't show any sign of MTB or non-TB mycobacteria. I'm quite confused and worried about what all this means. Is this something serious? What should we do next?